Mount Vernon, Ohio is a charming city located in Knox County. It experiences a humid continental climate, characterized by hot summers and cold winters. Summers are typically warm, with average temperatures ranging from 70 to 85°F, while winters are cold, with temperatures averaging between 20 and 35°F. The region receives a moderate amount of precipitation throughout the year, with an annual average of 40 inches, evenly distributed.

Hydrologically, Mount Vernon is situated in the Kokosing River watershed. The city benefits from the nearby Kokosing River, which offers opportunities for various outdoor activities such as fishing, kayaking, and canoeing. The river is known for its scenic beauty and diverse wildlife, providing an ideal setting for nature enthusiasts and adventurers.

Besides the river, Mount Vernon offers several parks and recreational areas. Ariel-Foundation Park is a popular destination with its expansive green spaces, walking trails, and beautiful lake. The park also hosts various events and concerts throughout the year. Additionally, Wolf Run Regional Park provides opportunities for camping, hiking, and picnicking.

Overall, Mount Vernon, Ohio offers a pleasant climate, diverse hydrology constituents, and ample outdoor recreation opportunities, making it a desirable destination for both residents and visitors alike.